Upper housing of a grill



FIG. 1 is a front view thereof;

FIG. 2 is a back view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a top front right perspective view of a upper housing of a grill showing my new design.

The broken lines in the drawings are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a upper housing of a grill, as shown and described. 